/usr/include/GNUstep/EOControl/ is in libgnustep-dl2-dev 0.12.0-13.
This file is owned by root:root, with mode 0o755.
..
/usr/include/GNUstep/EOControl/EOAggregateEvent.h
/usr/include/GNUstep/EOControl/EOArrayDataSource.h
/usr/include/GNUstep/EOControl/EOClassDescription.h
/usr/include/GNUstep/EOControl/EOControl.h
/usr/include/GNUstep/EOControl/EODataSource.h
/usr/include/GNUstep/EOControl/EODebug.h
/usr/include/GNUstep/EOControl/EODefines.h
/usr/include/GNUstep/EOControl/EODeprecated.h
/usr/include/GNUstep/EOControl/EODetailDataSource.h
/usr/include/GNUstep/EOControl/EOEditingContext.h
/usr/include/GNUstep/EOControl/EOEvent.h
/usr/include/GNUstep/EOControl/EOEventCenter.h
/usr/include/GNUstep/EOControl/EOFault.h
/usr/include/GNUstep/EOControl/EOFetchSpecification.h
/usr/include/GNUstep/EOControl/EOGenericRecord.h
/usr/include/GNUstep/EOControl/EOGlobalID.h
/usr/include/GNUstep/EOControl/EOKeyGlobalID.h
/usr/include/GNUstep/EOControl/EOKeyValueArchiver.h
/usr/include/GNUstep/EOControl/EOKeyValueCoding.h
/usr/include/GNUstep/EOControl/EOMultiReaderLock.h
/usr/include/GNUstep/EOControl/EONSAddOns.h
/usr/include/GNUstep/EOControl/EONull.h
/usr/include/GNUstep/EOControl/EOObjectStore.h
/usr/include/GNUstep/EOControl/EOObjectStoreCoordinator.h
/usr/include/GNUstep/EOControl/EOObserver.h
/usr/include/GNUstep/EOControl/EOQualifier.h
/usr/include/GNUstep/EOControl/EOSharedEditingContext.h
/usr/include/GNUstep/EOControl/EOSortOrdering.h